BAROTHERM®

Two-Part Thermally Conductive Grout

Specifications Contact our sales department

BAROTHERM bentonite material is designed for use in grouting boreholes containing ground source heat loops. BAROTHERM material, when combined with sand at various concentrations, yields a grout with thermal conductivity values ranging between 0.4 and 1.0 BTU/hr·ft·ºF. BAROTHERM material does not contain any polymers.

Geothermal Grout

The primary purpose of a grout column in the geothermal heating and cooling industry is to provide a thermally conductive pathway between the geothermal loop system and the earth. Secondarily, the grout has to form a low permeability seal to prevent contamination of the subsurface from the surface. Thermal conductivity, or k value, is a measurement of the grouts ability to transfer heat. The geothermal design engineer specifies the k value for the grout based on the design parameters of the system and the k value of the formations where the loop field will be installed.

PLASTECH PLUS INC. has grouts that cover the wide range of k values between .4 and 1.6 BTU/hr·ft·°F. Simple bentonite grouts are used where a k value of .4 BTU/hr·ft·°F is required. Barotherm and Barotherm Plus are bentonite grouts enhanced by the addition of silica sand and cover the k value range above .4 to 1.2 BTU/hr·ft·°F. For extreme situations IDP-357 can reach a k value of 1.6 BTU/hr·ft·°F

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